<template>
  <div class="login-page">
    <!-- 导航栏部分 -->
    <van-nav-bar title="账号登录" left-arrow @click-left="this.$router.back()"/>

    <!-- 一旦form表单提交了，就会触发submit，可以在submit事件中
         根据拿到的表单提交信息，发送axios请求
     -->
    <van-form @submit="onSubmit">
      <!-- 输入框组件 -->
      <!-- \w 字母数字_   \d 数字0-9 -->
      <van-field
        style="margin: 16px"
        v-model="username"
        name="username"
        placeholder="请输入用户名"
        :rules="[
          { required: true, message: '请输入账号' },
          { pattern: /^\w{5,}$/, message: '用户名至少包含5个字符' },
        ]"
      />
      <van-field
        style="margin: 16px"
        v-model="password"
        type="password"
        name="password"
        placeholder="请输入密码"
        :rules="[
          { required: true, message: '请输入密码' },
          { pattern: /^\w{6,}$/, message: '密码至少包含6个字符' },
        ]"
      />
      <div style="margin: 16px">
        <van-button block type="info" native-type="submit">提交</van-button>
      </div>
    </van-form>
    <router-link class="link" to="/register">还没有账号，去注册~</router-link>
  </div>
</template>

<script>
import { login } from "@/api/user";
import { setToken } from "@/utils/storage";

export default {
  name: "login-page",
  data() {
    return {
      username: "",
      password: "",
    };
  },
  methods: {
    async onSubmit(val) {
      const {body}= await login(val);
      setToken(body.token);
      this.$toast.success("登录成功");
      this.$router.push("/");
    },
  },
};
</script>

<style lang="less" scoped>
.link {
  color: rgb(91, 95, 98);
  font-size: 12px;
  padding-right: 40%;
  float: right;
}
</style>
